Yokogawa EXA ISC202 2-wire Conductivity Transmitter/Analyzer - Manual (Page 23)

IM 12D06A03-01E
Specifications 2-11
2-7. Control Drawing of ISC202S mA HART® Specification (CSA)
Electrical data of the ISC202S.
- Supply and output circuit (terminals + and -)
Maximum input voltage V
max
= 31.5 V. Maximum input current I
max
= 100 mA.
Maximum input power P
max
= 1.2 W.
Effective internal capacitance C
i
= 22 nF. Effective internal inductance L
i
= 35 PH.
- Sensor input circuit (terminals 11 through 17):
Maximum output voltage V
oc
= 14.4 V. Maximum output current I
sc
= 20 mA.
Maximum allowed external capacitance C
a
= 600 nF.
Maximum allowed external inductance L
a
= 88 mH.
・ Barriers and power supply should be CSA certified. The specifications must not exceed
the maximum values as shown in the diagram above. Installation should be in
accordance with Canadian Electrical Code, Part I.
Maximum safe area voltage should not exceed 250 V
RMS
.
For Class I, Div. 2, Group ABCD the CSA certified barrier is not required, and the Sensor
input circuit (terminals 11 through 17) is non-incendive having the parameters:
Maximum output voltage V
oc
= 14.4 V.
Maximum output current I
sc
= 20 mA.
Maximum allowed external capacitance C
a
= 3.5μF.
Maximum allowed external inductance L
a
= 200 mH.
・ The Hand Held Communicator must be of a CSA certified intrinsically safe type in case it
is used on the intrinsically safe circuit in the hazardous area, or of a CSA certified
non-incendive type in case it is used on the non-incendive circuit in the hazardous area.
S afe area
V max = 31.5 V o ltD C
Imax = 100 m A
P max = 1.2 W att
C SA certified
Pow er S upply
(H A R T compatible) )
O utput
Supply
ISC 40S S ensor
terminals 11-17
+
_
G
IS C 40 S S en sor
term in als 1 1 -1 7
H azardous area Safe area
+
_
G
Functional
earth Functional
earth
Intrinsically safe design
C SA E x ia C lass I, D iv.1, G roup A B C D ,
T4 for ambient temp. < 55°C
T6 for ambient temp. < 40°C
IS C 202S transmitter
+
-
Load
R esistance
Im ax = 100 mA
V max = 31.5 V o ltD C
H azardous area
Functional
earth
+
_
24 volts D C N ominal
Supply V oltage.
C SA certified safety barrier or
pow er supply w ith R int= 300
:
(H A R T compatible)
S uitable values are:
Fo r electrical data:
see text belo w .
Fo r electrical data:
see text belo w .
S uitable values are:
Intrinsically safe design
C S A E x ia C lass I, D iv.1, G roup A B C D ,
T 4 for ambient temp. < 55°C
T 6 for ambient temp. < 40°C
IS C 202S transmitter